Have you ever walked past a smell that instantly gave you a headache?
Sometimes, candle scents aren’t much different. There are certain scents that may be perfectly fine for someone else, but that same scent could drive you absolutely crazy. Your innate sense of smell becomes activated when the particles enter your nasal cavity.
The olfactory nerve is the nerve that gives you your sense of smell. The extremely small branches that penetrate through your skull base through tiny holes cause the olfactory nerve to send signals to your brain. These signals are different for every human being.