ex·ot·ic [ig-zot-ik] adjective
1. of foreign origin or character; not native; introduced from abroad, but not fully naturalized or acclimatized: exotic foods; exotic plants.
2. strikingly unusual or strange in effect or appearance: an exotic hairstyle.
3. of a uniquely new or experimental nature: exotic weapons.
4. of, pertaining to, or involving stripteasing: the exotic clubs where strippers are featured.
Webster is too clinical for me. Exotic has danger implicit. It has romance. The air is heavy and moist. There is a little mold forming under things. You feel different. The air is charged. The mind is altered. And, yes, it is not native.