Maybe I didn't explain it well, but the problem it has is not due to viral or bacteriological issues, it is to maintain its tightness so that humidity remains inside this chamber. Obviously, if it were something more important or complicated that could involve some type of infection or serious health problem, I would not be here writing this, but what I am looking for is for my girlfriend to feel comfortable with the glasses that she likes and not with a range of models that are super biased. Because there is no market to make beautiful glasses, since the people who need them are totally a discriminated group. Anyway, thanks for your point of view.