As nouns the difference between chemorepulsant and chemorepulsion
is that chemorepulsant is a substance inducing negative chemotaxis in motile cells while chemorepulsion is (biology|chemistry) the action of a chemorepulsant; negative chemotaxis.
chemorepulsion
English
Noun
(
en noun)
(biology, chemistry) The action of a chemorepulsant; negative chemotaxis