Many people pick up a seashell or two while on vacation at the beach.
It makes a nice inexpensive momento of their vacation. The problems do not occur until they realize that if not cleaned properly, seashells can have a devastating effect. From glares of other travelers wondering why you have not showered, to airport authorities searching through your bags for the unknown odor emitting from them. Properly cleaned seashells, on the other hand, will show no such effects. Many times seashells actually look considerably nicer without any algae and barnacles covering them.