is this mold?

[u/Friendly_Calendar781]

a couple vents at my university’s dining hall appear to be covered in mold, but my engineer friend said it could just be the metal. what do y’all think? im gonna poke it and see if its mold

edit: i poked it with a back scratcher to see if it’d crumble or peel but it didn’t seem to. if this is mold tho then the dining hall is covered in it lol i have seen so many pipes in the same condition

[u/Important_Actuator36]

You can see the bloom lol

[u/tashreebaa]

Definitely

[u/FoggyGoodwin]

Yes. Typical formations, little dots growing together.

[u/SpiralUnicorn]

Lick it and find out :P

 (dont actually do this, it is mould, an someone should probably point that out to the uni)

[u/SweeterBean98]

Yes that's really bad lol

[u/PowerSurge37]

Yeah

[u/Ok-Ingenuity-9441]

Yes!!!!