When outside walking, riding bicycle, or motorbike I always have a K95 hanging and airing on a 'leash' around my neck and have never been challenged. I put it on as required entering crowded outside and inside spaces, or when close to others. When it gets grubby (after about 5 days) I soak it overnight in washing powder solution with a little bleach which will kill everything harmful. Wash, rinse and hang it in sunshine next day and its ready to wear again. I bought 10 originally at the start of the pandemic but still have 6 in wrappers. Ive worn 4 which I rotate. If people did this, or daily after every prolonged wearing of any mask, all this needless environmental waste could be avoided or minimised.