1. rich (flavor, color, etc.); strong (e.g. odor); heavy; thick (soup, makeup, etc.); dense
甘く濃厚な香りが、ジャネットを包み込む。A sweet, rich fragrance envelops Janet.
2. probable; (very) likely; strong (suspicion, sense, etc.); pronounced
その可能性は極めて濃厚。That possibility is extremely likely.