I guess I have been lucky to have never experienced one of the before. But then again, you havent seen my mother in-law. Here is a quote from article "This critter is Lasioderma serricorne, a cigar beetle. It is very small, about a sixteenth of an inch in length. Like most anobiids, the head is deflexed and concealed by the hoodlike pronotum. It can be a household pest, infesting dry foods and spices. It is particularly fond of tobacco products."