#36: No Crowding in the Bathroom
If you’re in a bathroom with multiple stalls open, consider the people already occupying the space. If you can, choose a stall that’s furthest away from them. That way, both of you will feel more comfortable conducting your private business. But that’s not all you need to do …

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Since you’re sharing a private space and making some interesting smells, go for the courtesy flush. If your business is spreading through the air to another user, it’s time to give them a break. Flush once, flush twice if you must, but flush, flush, flush until there’s no trace of your deeds.