Killing an animal for sport, pleasure or food means catching all its bad impression since the motive is selfish. But no such bad impressions are caught from snakes or germs and the like, which are a danger to humanity, when they are killed out of philanthropic motives and only when absolutely necessary. Such killing, when it is not a duty, will certainly create binding impressions....
Impressions are contagious. Eating meat is prohibited in many
spiritual disciplines because the person thereby catches the
impressions of the animal, thus rendering himself more
susceptible to lust and anger. Sometimes, innumerable strong
impressions are transmitted through the mere touch of the
physical body of another person. A gross body, even a corpse, can
quickly impart numberless impressions to the person who touches it.
SPARKS OF THE TRUTH, pp. 24, 26, ed. C. D. Deshmukh
1971 © The Universal Spiritual League in America, Inc.