It wouldn't be safe to eat salad that's been left out overnight.
if they are raw yes if they have been cooked no
To make it easier to insert the tine into small, hard objects such as green olives.
no
No, the oven was not left on overnight.
They may be unsafe to eat if left out overnight and should be thrown out.
does squash spoil if left overnight or two days
It is generally not safe to eat green olives that have been left out overnight, especially if they are not stored in a cool environment or sealed properly. Bacteria can grow in perishable foods when left at room temperature for extended periods. If the olives were stored in brine or a sealed container and kept cool, they might be safe, but it's best to err on the side of caution and discard them if you're unsure.
No. It is not safe to eat turkey left out overnight in any container.
No, it may not be safe to eat after being left out overnight.
Yes, I accidentally left the milk out overnight.
Yes. It is a compound of several ingredients which eventually separate if left standing for too long.
No. Stew left out overnight would not be safe to eat, covered or not - unless where it was left out was as cold as a refrigerator.