Oxygen Not Included - How to deal with germs

Watery Storage Compactor Method (for Polluted Dirt / Slime)
Step 1: Build Storage Compactor + Bottle Emptier

Build near the source

Step 2: Storage Compactor Settings (Polluted Dirt /  Slime)

Settings for your Storage Compactor

Step 3: Auto Bottling with Clean Water

Remember to Enable Autobottling

Step 4: Sweep and Deliver

The water is to prevent Polluted Dirt / Slime from emitting Polluted Oxygen

Food Poisoning
Source: Outhouse / Lavatory

Contraction: Food Ingestion

Effect: Diarrhea (non-lethal)

Full Info (from Oil Upgrade beta)

Food Poisoning works as an early introduction of germs to players and it is fairly easy to control even in early stage where you have no research.

How to control at source (Polluted Dirt)

Outhouse (Polluted Dirt) >> Storage Compactor >> Compost (after research)

Step 1: Use the Watery Storage Compactor Method

Step 2: Compost (need research, plan ahead to reserve some space for Compost)

How to control at source (Polluted Water)
Outhouse >> Wash Basin (Water >> Polluted Water) >> Bottle Emptier (your waste area)

Step 1: Build Wash Basin around Outhouse

Note: room mechanic was added from Oil Upgrade beta

 Step 2: Build Wash Basin beside Bottle Emptier (your waste area)

I also build my Compost and Deordorizers in my waste area

How to control at contraction: Mess Hall

Once you have researched Mess Table and Sink, you can fully prevent Food Poisoning with settings such as below:

Not optimal due to limited space, also Sink is better than Wash Basin

Note: room mechanic was added from Oil Upgrade beta

TL DR:

Control Polluted Dirt (at source)

1. Watery Storage Compactor Method
2. Compost* + Deordorizer*

Control Polluted Water (at source)

1. Outhouse >> Wash Basin 
2. Wash Basin >> Bottle Emptier
3. Lavatory* replace Outhouse

Ultimate Control (at contraction)

1. Wash Basin >> Mess Table
2. Sink* replace Wash Basin

*need research

Slimelung

Source: Slime with Slimelung

Contraction: Breathing Oxygen / Polluted Oxygen with Slimelung

Effect: Slimelung (lethal)

Its not immediate, but once your dupes immune system is 0% and infected, Slimelung can cause death if not treated with Med-Bed.

Research and build Deordorizer to prevent it before digging into slime area. Use it to clean the Polluted Oxygen to reduce the Slimelung germs count.

Build at the entrance before going into slime area

Control Slime (at source)

1. Watery Storage Compactor Method

Control Polluted Oxygen (at contraction)

1. Deordorizer*

Late Game Control (at source)

1. Ore Scrubber*

*need research