I have never tried that one. Will check it out.
Discussion
For your experiment:
1. With meals - https://www.amazon.com/gp/aw/d/B0016ZWSZI
2. Directly in sinuses: https://www.amazon.com/gp/aw/d/B004THE87G
3. In + around ears (you'd be surprised): https://www.amazon.com/gp/aw/d/B004TIAXWY