What's that weird smell that drains have?
If it's that general drain smell... the water in a concrete pipe & the concrete dust being stirred (we used to call it "sweet smelling drains"), then it's an actual thing (like how rain hitting the city during the summer gives off a certain smell).
Someone way smarter than me described it recently... maybe it was Iso?
The drain smell could be a combo of gas waste from algae and bacteria, cement, rubbish, stuff that's washed in, trolley wheels, homeless guy/drunk guy urine, car tyres, etc. And poop, probably. I dunno I never really thought about it... Companies like ALS do gas sample testing so if we could capture some air from inside a drain they might be able to analyse it to see what particles are in the air. Not sure I wanna knowironfistdoug wrote: ↑18 Jan 2024, 12:24 pmIf it's that general drain smell... the water in a concrete pipe & the concrete dust being stirred (we used to call it "sweet smelling drains"), then it's an actual thing (like how rain hitting the city during the summer gives off a certain smell).
Someone way smarter than me described it recently... maybe it was Iso?
The "after rain smell" is called Petrichor, I think it's something in soil that gets picked up when rain hits warm ground and evaporates into gas
The smell I'm thinking of is when you first go in a concrete drain in summer.nysm_NYD wrote: ↑18 Jan 2024, 4:37 pmThe drain smell could be a combo of gas waste from algae and bacteria, cement, rubbish, stuff that's washed in, trolley wheels, homeless guy/drunk guy urine, car tyres, etc. And poop, probably. I dunno I never really thought about it... Companies like ALS do gas sample testing so if we could capture some air from inside a drain they might be able to analyse it to see what particles are in the air. Not sure I wanna knowironfistdoug wrote: ↑18 Jan 2024, 12:24 pmIf it's that general drain smell... the water in a concrete pipe & the concrete dust being stirred (we used to call it "sweet smelling drains"), then it's an actual thing (like how rain hitting the city during the summer gives off a certain smell).
Someone way smarter than me described it recently... maybe it was Iso?
The "after rain smell" is called Petrichor, I think it's something in soil that gets picked up when rain hits warm ground and evaporates into gas
Not the musty pooey gassy smells you find further up drains.
Another drain smell that always smells the same is the brown rust-like mud that seeps out of some drains. Mummy tunnel had lots of these deposits & if you were unfortunate enough to brush against them, it looked like you had s*** on you.
Will have to pay more attention on the next mish! Walking behind certain explorers can be worse than the actual drain
I hate going in drains after it's been raining for that reason
Yeah I saw some really nasty photos of the cpier littertrap after those recent storms.ironfistdoug wrote: ↑20 Jan 2024, 3:22 pmI hate going in drains after it's been raining for that reason
Here it is, taken from the tunnel toads website when they visited.
https://imgur.com/nEMdkxg
https://en.wikipedia.org/wiki/Petrichor
But with more of an "old grass" smell. Sometimes there's the smell of fuel and sewage, which is pretty unmistakable.