If it looks good and smells good then eat it.
That depends on a lot of factors; if it was just left out on the kitchen table it should be fine. However if it was left outside on a hot day somewhere where insects and other animals can get to it might no be so good...
No, it is not safe to eat deli ham that has been left out overnight as it can lead to bacterial growth and foodborne illness.
No, it is not safe to reuse frying oil that has been left out overnight as it can become rancid and develop harmful bacteria.
No, it is not safe to eat if it has been left out overnight.
No, it is not safe to leave watermelon out overnight as it can spoil and become unsafe to eat due to bacterial growth. It is best to store watermelon in the refrigerator to keep it fresh.
It wouldn't be safe to eat salad that's been left out overnight.
It isn't safe to eat any food that has been left out overnight.
Yes, that is safe. Your muffin may get stale, but it is not dangerous to eat after being left out overnight.
No. It is not safe to eat turkey left out overnight in any container.
No...it would taste horrible! Throw it out.
No, it is not safe to consume raw meat that has been left out overnight as it can lead to bacterial contamination and foodborne illnesses. It is important to refrigerate or freeze raw meat promptly to prevent the growth of harmful bacteria.
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.
No.