Unscented candles are mostly commonly used for events where food is being served, or in large groups where people may have allergies to scented candles.  Some highly scented candles can trigger attacks in those who suffer from asthma.  Pillar candles, floating candles, tealight candles, votive candles, and taper candles are usually always available without scent.  Unscented candles are available in many different colors and styles and are typically used for restaurants, weddings, and other large events.