If you often feel tired and sick or suffer from allergies, your home could be the culprit, says an expert.
According to naturopath and building biologist Nicole Bijlsma, busy roads, substations, old carpet, rising damp, harsh cleaning chemicals and air fresheners can all affect your health.
"Since World War II we have unleashed tens of thousands of chemicals into the environment, the great majority of which have not been tested to determine their impact on human health," the Sydney Morning Herald quoted her as saying.
It can be overwhelming to hear that everything from the paints, glues and plastics in our houses to the creams and powders we put on our skin are potentially toxic.
But it is something we can't afford to remain ignorant of, said Bijlsma.
In an ideal world we'd all build our own house from scratch on a piece of land that has not been contaminated by chemicals and is far enough away from power lines, substations, busy roads and farms that use certain pesticides and chemicals, she said.
Bijlsma said adopting a precautionary principle is a starting point.
"The first thing I recommend people do is get a good vacuum cleaner to make sure that when you suck the dirt into the vacuum cleaner 80 per cent of it is not coming out the other end becoming airborne," she said.
Opening windows to freshen up your house and taking off shoes to minimise the amount of dust, chemicals and pesticides brought into the house with you are also good ideas.