Microfilter
I think I speak for many people when I say that we are getting a little bit tired of your vendetta against OAT. You never cease to amaze me with some of your comments. You really need to get some reliable sources.
As for being advised to shave, wash...Perfectly acceptable in my opinion. OAT, and many other FTO's wish to create a professional atmosphere. Would you turn up to your job with an airline looking like
? I think not. As has been pointed out, no one wants to sit next to someone in a close environment who has not has a shower.