Not everything is sweet in your home sweet home. In fact, you may be exposing yourself to toxins, allergens and irritants found in everything from your home's construction materials and ventilation to the beauty products and cooking materials you use on a regular basis. Here are some household culprits you may not have considered.

Inhaling scented candles for two hours may result in lead exposure that can threaten human health.

12 of 14 different brands of household air fresheners contained phthalates, chemicals known to disrupt hormones and cause birth defects in male genitalia.

If inhaled by an infant in high quantities, baby powder can block the child's bronchial and lung passages and cause suffocation.

Burning insence can pose a real threat to your health in the form of cancer risk, asthma and DNA damage if you breathe in its fumes for extensive periods over time.

Radon, a radioactive and carcinogenic gas, can enter your house through cracks and gaps in the house, in places like windows and the basement -- it can also be found in well water.

If your house was built pre-1970, building materials like cement roofing, shingles and siding may contain asbestos, which have been linked to lung cancer.