Insufflating

verb

1. To breathe or blow into or on.
2. To treat by blowing a gas, vapor, or powder into a body cavity.
3. To inhale (a powder etc.).

   "2001: Cocaine is usually taken by insufflating the white powdered cocaine sulphate into the nose, which leads to rapid absorption of the drug into the bloodstream. — Leslie Iversen, Drugs: A Very Short Introduction (Oxford 2001, p. 98)"

4. To exhale upon baptismal water, or the one being baptised, as a ritual act.