http://www.swaminarayangadi.com/help/fa ... garlic.php
The main culprits often cited are:
leek, onion, garlic, and a few other such herbs such as asafoetida, an ingredient common in curries etc.
Eaten raw they are believed to incite people to anger and disputes cause irratability and anger; eaten cooked they increase one's sexual desire and encourage masturbation.
Buddhist adepts are advised to avoid them, as their consumption tends to disturb the peacefulness of the mind. Also the breath of the eater, if reading the sutras, will drive away the good spirits.Vampires seem to avoid it as well.

There is a well known spiritual community in Brazil that also refrains from consuming garlic and the reason offered is the same...
Iin India they view them as able to incite allergies in some people, raise the body temperature and other effects considered adverse.
Asafoetida or " hing ", is used in Aryuveda and Indian cuisine as a substitute for the onion family because it gives a flavour like garlic to food, but has none of the other properties of the Aliums. It is in fact a dried resin from a shrub. You will in fact not detect Hing on the breath or through the pores once cooked. It just gives a background note which is like garlic.
It is so valued in Aryuveda and Indian cuisine that it is considered pure by even the most strict Brahmins who are fairly obsessional about such things.
Onions and garlic can even be toxic in animals
http://www.peteducation.com/article.cfm ... 9&aid=2414
So what do you think - despite the health giving properties do these other effects merit consideration?