None over here,yet,but...some suggestions.
Traveling with masks on is hard,and in some cases,gives a false sense of security.
(Some say this flu is very small,can pass thro' regular masks mesh)
Add something like oil of lavender or eucalyptus to it,or skip the mask and put some Vicks Vapour rub into each nostril - just like they do in morgues - keep mouth closed
After flu shots got a bad name,a rather enlightened boss offered us all a choice of Homeopathic pills or regular shots .
Result - the pill takers had 10-1 less sick days,even tho' we traveled by the London Underground,each day.I've been a fan,ever since.