No there is not. In the studies posted earlier by Cupid Stunt one of them trots out the hair dresser example yet again.
You can keep saying that the evidence is clear but it is not. Before healthy people with almost no danger of getting seriously ill or dying were disproportionately scared:
- World Health Organisation with 70+ years of experience at the start of the pandemic: ‘There is currently no evidence that wearing a mask (whether medical or other types) by healthy persons in the wider community setting, including universal community masking, can protect them from infection with respiratory viruses, including Covid-19.’
- Mike Ryan a director at WHO around the same time: ‘There is no specific evidence to suggest that the wearing of masks by the mass population has any potential benefit. In fact, there’s some evidence to suggest the opposite in the misuse of wearing a mask properly or fitting it properly.’
- Chris Whitty, again around the same time: ‘In terms of wearing a mask, our advice is clear: that wearing a mask if you don’t have an infection reduces the risk almost not at all . So we do not advise that.’
The Denmark-19 study that was done before UK were told to start wearing masks last June. A large randomised controlled trial to see if masks protected people wearing them. The finding was difference in outcomes between those wearing masks and those not was ‘not statistically significant’. If there is another randomised controlled trial I can’t find it.
I think you might be misinterpreting the significance of the three quotes you list.
The first is about protecting the
wearer - the point about wearing a mask is to protect other people from your infection (any side benefit of protection for you is just that, a side benefit). The point is not to protect you. It's to prevent transmission from you.
The second is saying there is no evidence, at the start of the pandemic, that mask wearing has an effect on Covid. This was true in the limited sense that the pandemic had just started, we hadn't had time to gather the evidence. Absence of evidence and all that. There was ample ample evidence even at that time from many RCTs and case-controlled studies that mask-wearing limits transmission of flu, TB, SARS and other respiratory infections. There was no reason to assume that Covid would be different, we just didn't know for sure at the time. It was an unhelpful thing for him to say, even though accurate, as demonstrated by your (and presumably other people's) misunderstanding of it to support a position damaging to society.
The third is largely tautologous - as the main point of wearing a mask is to protect others if you have an infection, then obviously if you don't have an infection it can't have that effect. The point is you don't necessarily know when you have an infection - so you wear it all the time, just in case. If you could know unambigously when you had an infection, say your nose turned green or something, then you'd just isolate completely and wouldn't need to wear a mask to go out, as you wouldn't be going out.
The Danmask-19 study a) again only examined the effect on wearers - which I stress again is not the point and anyway b) as you say it was statistically significantly inconclusive, however with leanings towards suggesting a protective effect even for the wearer - non-mask wearers were 1.17 times more likely to catch the virus in the one month of the study period (ie mask-wearers were infected less often, but not less often enough in their sampling to be reasonably certain the difference wasn't due to chance). (It also did not control for differential behaviour in masked and non-masked controls, which was probably its greatest weakness - everybody has probably personally observed the well-documented tendency to behave less risk-aversely when masked, however hard one tries not to).
If you want to read studies, search Pubmed for "face masks respiratory virus" or similar. You'll find many many studies and meta-analyses that all say face masks reduce transmission of respiratory viruses. As surely you'd assume they would anyway! Virus comes out in droplets and aerosols from mouth and nose - cover mouth and nose with a material that can capture and or slow down ejection of those droplets - less virus gets out less far into the environment. Or you could just believe me - I'm not lying and I'm not wrong.
There's no shame in realising you might have been led to erroneous conclusions, it's been difficult and scary and complex for everyone; it's better to be right now than continue to hold out in a wrong position. Please wear a mask.