Fucking hell.... can we not post total retardation on this site. You aren't helping conservatism in Canada by acting like a mentally deficient crank. What you smell with a fart is the actual gas (sulfur and hydrogen sulfide) not any particulates that thankfully would stay in your pants.

In the case of spreading disease it's the particulates that are expelled from your mouth when breathing and speaking that actually pose the risk of spreading infection. The mask definitely help catch those.