How does sage clear my negative energy?

Name: Rahul. DOB: 8 June 1992. POB: Bangalore. TOB: 3:15 PM.

I’ve been curious about how sage actually works to clear negative energy. Is it the fragrance, the act of burning, or the intention I set that shifts the energy? Sometimes I feel an instant change, and other times I notice nothing at all. I want to understand how this process really clears negative energy from me or from my home.