In the U.S., there are about half a dozen serious collectors of gum, and more than one serious enough to pay $350 for a stick of Colgan’s Taffy Tolu Chewing Gum, dating from 1900 to 1910...I tried without success to find a word for "lover of gum." The appropriate match for the Greek "-phile" would seem to be "mastic", which is also the word for a Mediterranean evergreen shrub which produces a resin ("mastic tears" at right) used to make varnish and chewing gum. So it should be "masticophile."
“A fellow collector and I got a lead on a National Colgan’s Taffy Tolu gum vendor from a Chicago dealer who had found it in an old barn. We decided rather than try to outbid each
other, we would make a fair bid and purchase the machine together. Pleased with our $2,000 purchase, I took it home and opened it up and cleaned it. I was pleasantly surprised to find seventeen sticks of Colgan’s Taffy Tolu Chewing Gum inside... In the end, my partner and I sold thirteen sticks of the gum for $300 to $350 each, making a $4,000 profit without even selling the machine!”
But I wouldn't use the word to describe someone in public, because it would sound too much like "mastigophile" -
Mastigophilia: Paraphilic sexuoeroticism that hinges on punishment and humiliation.A new word for me, but one that I suppose is going to pop up more frequently in the popular press and cyberspace now.