In most Arab countries, bukhoor is the name given to scented bricks. These scented chips/bricks are burned in incense burners to perfume the home and clothing with a rich thick smoke. This is used specifically on special occasions like weddings or on Fridays or generally just to perfume the house.
The bukhoor is usually burned in a mabkhara, a traditional incense burner (censer). It is customary in many Arab countries to pass bukhoor amongst the guests in the majlis (Arabic مجلس, meaning congregation). This is done as a gesture of hospitality.
Bukhoor is very popular to remove the odor of fish after it is cooked inside the house.