Mostly applied to anything with sensory or emotional intensity — smells, tastes, alcohol, perfume, atmosphere, feelings. Compare with
浓厚 (nónghòu, thick / strong, slightly more abstract —
浓厚的兴趣 strong interest) and
强烈 (qiángliè, strong / fierce, more about force).
浓烈 leans toward sensory richness.
