I don't.
Largely because I'm a Food Hygiene Nazi I take having a clean kitchen and food storage very seriously.
I had something like gastro once or dysentery, it was that bad around 24 years ago and something violently evil following trying a different takeaway out. Never again if I can avoid it.
DP sighs when he hears me around the fridge because he knows I will be examining the condition and packaging/wrapping of food and luzzing it out at the slightest doubt. My argument is if he doesn't want me to throw it out, don't leave the bastarding stuff uncovered on the countertop overnight or open in the fridge, then. Especially as the odds are it only went in the fridge after being out for several hours first.
Had tummy upsets regularly as a kid. Because the house was a fucking midden. All that bollocks about houses being too clean causing allergies and autoimmune disease is a crock of shit, as by that reasoning, I should have been fine.
My home is clean, but we have cats + litter tray, etc. As long as the countertops are wiped down immediately before cooking and hands are washed properly, it's fine.
If somebody is picking up bugs regularly and they are over 18, they need to rethink their kitchen hygiene. Below that, they need to be taught to wash their hands properly to reduce the opportunities for other people's children passing on bugs.