Why do mushrooms grow out of nowhere in houses?

[cooolguy32]

A few months ago, I when into my bathroom and found a mushroom has grown in the corner, why does this happen?
/discuss

[Ad Bot]

[e-maxx]

bc someone stuff in the corner

[Refticus]

because it meets the requirements
cold, dark and damp.

[carolcat]

clean your house

[cooolguy32]

clean your house

Ok.

because it meets the requirements
cold, dark and damp.

Oh.

[Silleb²]

A couple years ago there were black mushrooms growing in the living room of my house. We changed the carpet into wood in most of the house.

[Satan From Wreck-It-Ralph]

they are the true owners

[Ravencroft·]

Gross, that definitely shouldn't happen lol

[Trymos]

because mario just hit a block that contained one, duh.

[snot2]

there isnt muchroom anywhere else

[SimpleFish]

Clean that stuff up, boy.

[Muzzles56]

air out the bathroom often - open a window for a few hours. just not overnight

[Electrk.]

because you live in a grass hut in the middle of the woods

[cooolguy32]

air out the bathroom often - open a window for a few hours. just not overnight

I don't have a window in my bathroom.

[sir dooble]

I don't have a window in my bathroom.

Do you have an extractor fan? There must be some form of ventillation in a bathroom otherwise the room remains humid/damp after showers/baths.
This humidity/dampness lets mould and other fungi grow. The can cause respiratory issues.