Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Dangerous

Dangerous as men milliners.
—Anonymous

Dangerous as a machine gun.
—O. Henry

Dangerous as the foamy race of ocean surges.
—Victor Hugo

Dangerous as hammering dynamite.
—James Huneker

Dangerous as to check a brute.
—Charles Kingsley

More dangerous, than baits to fish.
—William Shakespeare