I have an indoor pot that has started growing mushrooms. Are the spores they will produce hazardous in any way

Question

I would like to let them grow if they are not harmful, but I'm not sure it the spores are bad for my lungs. The mushrooms have brown conical caps with no distinguishing marks and are about 2 inches high, but have only been growing for 5 days or so.

Answer 1

It's really hard to say.  Generally the spores are not harmful.

To be on the safe side why don't you just pick the mushrooms and throw them away before they dry out and release spores?

That would also eliminate the possibility of a child or pet picking and eating one (if that is even a concern at your home).  Almost certainly the mushrooms are not edible so there is really no reason to keep them.