In the Navy, we were not allowed to have bic type lighters in the forward hold near the access to the sonar dome aboard our destroyer. This is because on one ship someone's lighter fell out of their pocket and down the tube 4 stories into the sonar dome and it went off and blew the sonar equipment all to heck.

You can detonate any flammable liquid/gas with enough compression.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)