Is seafood that has been left out overnight still safe to eat?

Answer 1

Yes, as long as the temperature in the room is under 40°F, 4°C. After brought to a temperature just slightly above the temperature of melting ice for more than 20 minutes, the bacteria found naturally in oysters (and there is a TON of them) will begin multiplying rapidly. These bacteria are quite poisonous to all animals, and can cause symptoms ranging from gastro-intestinal discomfort, to vomiting, and if left untreated, possibly death. A byproduct of this bacterial action is the creation of ammonia, which can be easily smelled with a quick whiff. If you smell ammonia in ANY raw seafood, DO NOT EAT!

Answer 2

No. Seafood should not be eaten if it was left out overnight.

Answer 3

That would not be a good idea to eat soup left on the counter all night, unless the counter was as cold as a refrigerator. Throw it away. Of course you can...but it would probably kill you.