Some of these responses beggar belief.
FIL is not being called unhygienic merely because OP has OCD. He is acting in an unhygienic manner because he's careless about food poisoning with little kids about.
The number of people who think it's perfectly okay to be so lax with raw meat, is shocking. If you want to eat a bread roll handled by such a person, you knock yourself out. Go lick the floor of the local slaughter house if you want but don't push your laissez-faire attitude on other folks, especially not when tiny children, who can get very ill from poor food handling practices, are involved. A bloke handling raw meat and chicken, wiping his hands on his piss splashed jeans is gross. He will then be touching the salad, buns, drinks, plates, cutlery and more.
It's almost as if some of these people think their personal beliefs kill bacteria.
Will his guests get sick. Who knows. Maybe, maybe not, but he has no decency to put that risk on them.
She quietly excused herself. She didn't stand up and scream, "dirty bastard". No way would I risk my guts, nor my child's, to pacify men who don't want to wash their hands. I'm willing to bet if he doesn't wash hands after handling raw chicken, he doesn't wash hands after visiting the toilet either.