Is one allowed to spray cologne on shabbos? Any rules against doing this?
As always, please cite your sources
Mi Yodeya is a question and answer site for those who base their lives on Jewish law and tradition and anyone interested in learning more. It only takes a minute to sign up.Sign up to join this community
The primary source is the in Gemara in Bietza 23a which discusses Molid Re'ech - creating a smell on an object.
Rashi (D'Ka Molid) there explains that it's a Rabbinic prohibition; it's similar to doing work.
This does not apply to food items, according to most Poskim - and according to how we Pasken.
The earlier Poskim argue if this applies to the body. For example, the Taz (511:8) disallowed it. However the Mishna Berura allows it. (This can be inferred from 327:1 that a healthy person can use Rose Water.)
There's some major discussion if it's allowed even if it will inevitably cause one's clothes to also smell good.
All this - with lots of sources - and more you can find on page 330 of Vol 3 in Sefer Orchot Shabbat (In Hebrew, by Rabbis Gelber and Rubin, Jerusalem 2009 ).
In short: If you spray it onto your body - but not enough that your clothes will smell of it - then everybody allows it.