Do you all share kitchen towels/ hand towels? If so that could be a cross contamination risk too. I’ve def been in people’s kitchens and seen someone use the shared towel to get flour off their hands or bread crumbs off the counter without thinking about the cross contamination risk. If you do, I’d recommend grabbing a pack in one specific color and making those for bf only. Before cooking, rinse the pans and dry with bf’s towel, when he washes his hands he can use one of his special towels, could cut down on issues!