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0 pointsboringg4y ago0 comments

Odorless / colorless -- same as natural gas. Just drop in a tracer chemical.

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Unfortunately, these tracer chemicals tend to poison the fuel cells in cars. So that is not an option

boringgOP4y ago

Surely there is a tracer chemical that could work.

HPsquared4y ago

The usual ones are sulfur based.

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