I am inclined to think, that this effluvium is not altogether an imaginary phenomenon.
Some people give forth an effluvium, which is more visible than that of others.
There is an optima distance for the realisation of this effluvium.
The effluvium is visible under other conditions, which are worth noting.
Some consider also that we inhale the effluvium arising from it, which has the like effect.
Dorothy buried her face in the roses to get rid of the effluvium of such vulgarity.
We can also compare it with the effluvium which emanates from electrified bodies.
This word is effluvium in the singular, and effluvia in the plural.
If there remains the least effluvium of the fox the hound will detect it.
The wind is visible in clouds, the wave is visible in foam; effluvium is invisible.