Sri Aurobindo
Letters of Sri Aurobindo
Volume IV - Part 3
Fragment ID: 15001
That is how illnesses try to come from one person to another – they attack, by a suggestion like this or otherwise, the nervous being and try to come in. Even if the illness is not contagious, this often happens, but it comes more easily in contagious illnesses. The suggestion or touch has to be thrown off at once.
There is a sort of protection round the body which we call the nervous envelope – if this remains strong and refuses entrance to the illness force, then one can remain well even in the midst of plague or other epidemics – if the envelope is pierced or weak, then illness can come in.
What you felt attacked was not really the physical body, but this nervous envelope and the nervous body (prāṇakoṣa) of which it is an extension or cover.