New Random event: Portal of Filth

[Guv Guvington]

Here is my idea of some chems that could be used for a "sewage event" pool.
My idea is that the game picks around 10 chems from this list for every sewer flood to ensure a certain level of uniqueness for every sewer event.
And also to simulate the large variety wild stuff you can find in sewer water.
The less common a chem is, the less likely it gets picked as an "ingredient".
Less common chems also appear in smaller quantities than more common ones if picked.

Common

Sewage
Water
Carbon
Compost
Ammonia (p)
Porktonium (fat)
E. Coli

Uncommon

Acetaldehyde (harmful wasteproduct)
Miasma
Formaldehyde (wasteproduct)
Toxic Slurry
Mucus
????
Beff
Blood
Bitters
Green Cheese (fermentation)
Gravy
Meat Slurry
Squeeze (fermentation)
Yoghurt (fermentation)
Bacterial Medium
Denaturated Enzyme
Fartonium
Iron Oxide
Space Fungus
Green Vomit
Acetic Acid
Fish Oil
Sulfur
Nickel
Hydrogen

Rare

Barium (funny wasteproduct with water)
Calomel (mostly cuz it makes you vomit)
Space Ipecac (vomiting)
Synthflesh
Mimicotoxin (funny sewage-induced hallucinations)
Lungrot Bloom
Flourosurfactant (Sewer foam if it contains water)
Smoke Powder (Don't smoke near sewage!)
Bath Salts
Space Glue (sticky)
Toxin
Space Lube (funni)

The event could also spawn some fart gas.