Smoke

Smoke
Properties
Type	Gas
Difficulty of Production	Very Easy
Exists in Reality	Yes
Can Be Placed	No
Temperature	~20°C
Renewable?	Yes

Smoke is a gas and essentially, it quite literally is pollution as fluid form. Smoke can come in 3 variants: Smoke / Leaded Smoke / Poison Smoke.

All machines that use combustion as fuel can generate all variants at once, although they don't really affect anything like poison and heavy metal pollution.

Smoke cannot be moved/stored/used in anything, it simply exists.

Poison Smoke
Properties
Type	Gas
Difficulty of Production	Very Easy
Exists in Reality	Yes
Can Be Placed	No
Temperature	~20°C
Renewable?	Yes

Leaded Smoke
Properties
Difficulty of Production	Very Easy
Exists in Reality	Yes
Can Be Placed	No
Temperature	~20°C
Renewable?	Yes