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Re:The foul-smelling fuel that could power big ships by kccqzy on Saturday November 07, 2020 @04:10PM (#25019415)
Eh, depends on the concentration. I'm pretty sure your introductory chemistry teacher asked you to smell a dilute solution of it. And it's a common reagent in introductory chemistry classes so you've had plenty of chances of smelling it.
Re:The foul-smelling fuel that could power big ships by Someone on Saturday November 07, 2020 @04:47PM (#25019824)
You can also buy ammonia solution in about every grocery or supermarket.

It also is used as a stimulant. https://en.wikipedia.org/wiki/Smelling_salts:

“They are also used as a form of stimulant in athletic competitions (such as powerlifting, strong man and ice hockey) to "wake up" competitors to perform better. In 2005, Michael Strahan estimated that 70–80% of National Football League players were using smelling salts as stimulants.”

Re:The foul-smelling fuel that could power big ships by csours on Saturday November 07, 2020 @05:32PM (#25020258)
At the concentration needed to use as fuel, and in the confined machinery space of a ship, it could certainly be deadly.