Go with what Kydsid suggested for storage. I think that with time, you'll find plenty of sticks which don't leave that lingering taste. It also helps if you have a drink with the cigar as well. since you just turned 18, I can't suggest alcoholic beverages (even if I love a pale ale to cleanse the palate), so I'll go with something like lemonade or a sprite with some sort of citrus. Citrus cleanses the palate and gets rid of any lingering taste if you have a stick with the aftertaste.
Cheers and happy smoking,