Reading the comments, no. Those are even more special suits.
They’re NBC suits. Not just bio.
Looks like for bio they’d be level 4.
imagine for a moment - these passengers have been listening to the CCP tv telling them all is well, no big deal, America is bad for panicing, and then this geared-up passenger crew walks down the aisle lookin’ like they’re on a Mars mission. Talk about reality biting.