This post is based on the code in the HC manager script itself, and states the following on food:
Every time you eat an item it adds minimum 1% to your disease risk pool (even if the food is not hazardous) but does not force a roll.
- Drinking most safe drinks (not Dirty Water) adds 0% and does not force a roll
- Drinking Nuka-Cola adds 2% but does not force a roll.
- Ingesting certain high risk items triggers a roll as well as increasing your risk pool.
- Eating normally-risky foods adds 7% to the pool.
- Eating high risk foods adds 12% to the pool.
- Cannibalism adds 5% to the pool (same as a monster bite) - human flesh is relatively healthy it seems ;-)
And to answer your question, in this post the risks associated with each food are listed:
Foods with Standard disease risk in raw form (+7% to pool, immediate check):
- Dirty Water (bottled or pumped)
- Bloatfly meat (safer than most insects)
- Blood packs
- Brahmin meat
- Cat meat
- Cave Fungus
- Pretty much all raw meat / eggs not listed below (I have hand-checked and didn't find any more exceptions)
Foods with High disease risk in raw form (+12% to pool, immediate check): :
- Mutant hound meat
- Glowing blood pack
- Moldy food
- Lukowski's potted meat
- Glowing One meat
- Ghoul meat (from a specific quest)
- Bloodbug meat
- Stingwing meat
- Radroach meat
- Molerat meat
All other foods presumably have the +1% default risk, no immediate check (except: 0% for Purified Water, 2% Nuka-Cola) Including:
- All prepared or cooked foods not listed above
- All raw crops and wild plants
- Pristine Deathclaw Egg
- Brain Fungus
- Glowing Fungus
- Canned Dogfood
If I recall correctly, anything that adds up to below 25% will not trigger a dice roll, above that you might fall sick.
Author: The Inept European (who seems to be far from inept :) )