underscent means A scent that is perceptible but less prominent than other scents in a particular environment. Lexicurio rates it Sui generis — a strength score of 100 out of 100.
Etymology
From under- + scent.
noun
- A scent that is perceptible but less prominent than other scents in a particular environment.“1902, Marie Corelli, “Temporal Power”: A Study in Supremacy, London: Methuen, Chapter 18, p. 256,
The under-scent of hidden violets among moss flowed potently upon the quiet air, mingled with strong pine-odours and the salt breath of the gently heaving sea,”