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Depending on the type of rocket fuel used, launches produce nitrogen oxides, chlorine, black carbon particles, water vapor, carbon monoxide and carbon dioxide — and no propellant avoids creating of some kind of emissions.

Nitrous oxide is a common product with medical, industrial and culinary uses, but it’s also used as a recreational drug when inhaled.

Other human remains found elsewhere in Herculaneum had iron oxide deposits in the skull, suggesting that the fluids in the skull were vaporized by the heat, leaving only traces of degraded heme proteins.

Bob Bryar, former drummer for My Chemical Romance, had tanks of nitrous oxide next to him when he was found dead, according to reports.

Methane and other gases, notably nitrogen oxide from gas stoves, are linked to higher risks of asthma.