If you think ill prepared food will have easy time killing you - you have not done your homework. It is hard to get sick.

Salmonella - 1/20000 eggs. Beef/pork - sterile inside, parasites are virtually eliminated from the commercial pork, so only charring on the surface is needed. Salmon - anisakis cannot pass the intestine barrier anyway.

Any food that has been brought to boil/pressure cooker - safe.

According to CDC estimates 48 million people each year get sick from foodborne illnesses, only 3000 die. That amounts to (much) less than a 1% chance your friend will kill you (even when you get sick), so you can relax, relaxatorium.

http://www.cdc.gov/foodsafety/foodborne-germs.html