Burning bay leaves indoors is an ancient ritual that is often attributed with almost magical effects. When you light a bay leaf and let the smoke hang in a closed room for 15 minutes, three things essentially happen: a chemical reaction, a biological effect on your body, and a change in the atmosphere in the room.

Here’s what happens scientifically and practically after a quarter of an hour:

Relaxation and stress reduction (the effect of linalool)
Bay leaves contain essential oils, especially linalool and cineole. When the leaf smolders, these compounds are released into the air.
After 15 minutes of inhaling this scent in a normal-sized room, a calming and anxiety-relieving effect is often noticeable.

The nervous system relaxes slightly, similar to aromatherapy with lavender. Many people report feeling more focused and calm after just 15 minutes without feeling tired.

Breathing relief
The cineole it contains (also found in eucalyptus) has expectorant and anti-inflammatory properties.
Inhaling the gentle scent for 15 minutes can have a positive effect on blocked airways or sinuses. You often feel as if you can suddenly breathe more freely.

Odor neutralization and indoor climate
The smoke from bay leaves is remarkably effective at neutralizing unpleasant odors in the home (such as from cooking or pets). After 15 minutes, the home no longer smells like what was in the air before, but rather a pleasantly spicy and woody scent.
⚠️ Important safety instructions for the experiment:

Never leave a burning or smoldering leaf unattended: Always place a burning or smoldering leaf in a fireproof container (e.g. ceramic or cast iron).

Smolder, not burn: The leaf should not burn, but should smolder slowly. Blow out the flame immediately after lighting.

Ventilate after 15 minutes: Although smoke contains beneficial substances, smoke is still smoke (it also contains particulate matter and carbon monoxide). After 15 minutes, you should ventilate the room by opening the windows wide. The pleasant aroma and relaxing effect will remain in the room until the thick smoke has dissipated.