There are more types of fungus than any other type of life. Lots of them are mostly harmless. Some of them are a little toxic. Some others are very much toxic. Some others will cause allergies, fungal infection, rare metabolic disorders or all together.

It's the worst kind of lottery, most likely nothing will happen but if something happens it will be pretty uncomfortable. IT IS NOT WORTH IT!

I once at a huge slice of boston creme pie from a local deli, I got nearly to the end before I flipped it over and saw the bottom crust was entirely black mold.

I had one of the worst stomach aches of my life for about 6 hours that night and enough gas to power a small town, but no lasting harm. I was also a teenager so likely my digestive system was nigh invulnerable.

It should be understood that most fungus won't survive in your body, but it does produce toxins. Those toxins don't have a hard line between harmless and toxic, so the small amounts of spores you ingest every day do nothing, but eating a whole moldy bread slice could make you pretty sick.