Perhaps. I remember on the 330, when someone would drop a deuce in the forward lavatory, it’d vent in the cockpit.
I know the flow patterns are from the top to the under-seat area in the passenger cabin, there’s supposed to be more flow in the cockpit for potential smoke evac but I really don’t know if that’s impactful.
I wish there was a way that we could trace points of infection. Is it work, is it home? Behavioral? There’s pilot social media circle that’s complaining about their doctor demanding a 14-day quarantine before entering his practice for non-emergency elective visits if you’ve been traveling. A lot of people are saying “just lie/say no”, whereas I’ve been without molars for flipping seven months because I actually follow my Endodontists guidelines.