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Install an air filter in your home.

Close your windows and turn on the AC.

Shower or bath after being outside.

Wear a face mask.

Stay indoors when conditions are particularly poor.

If driving, turn your engine off when stationary.

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- Start with a simple recipe such as yogurt or sauerkraut

- Keep your hands and kitchen tools clean. Sanitize knives, cutting boards, tongs and storage jars with boiling water before you start.

- Mold is bad: the colour pink is a sign of mold. If yogurt turns pink as it ferments, you need to discard it and start again. For kraut, if you remove the top leaves and see any sign of mold, you should discard the batch.

- Always use clean, closed, airtight lids and containers such as mason jars when fermenting yogurt and kraut. Keep the lid closed to prevent insects and contaminants from getting in.