Chilli is hot and stimulating with very less aroma when eaten. Chilli contains capsaicin, an alkaloid substance which makes chilli hot to taste. Capsaicin is present in chilli seeds and membranes. When chilli powder is swallowed, capsaicin makes the brain to release a neurotransmitter called substance P. This makes brain think that the body is in pain making body respond to chilli. The heart beats rapidly and the natural painkiller endorphin is secreted. You can lay out the chillies in sun. As the sun does not dry the chillies completely, it is good to smoke to preserve them.