General information, not an individual diagnosis. Ask a healthcare professional if you are unsure about your situation.
Airing means opening windows to exchange air quickly. Ventilation provides a more continuous exchange through air inlets, vents or a mechanical system. Doing one does not remove the need to check that the other works.
The French Environment Ministry recommends opening windows fully in every room for at least ten minutes each day, in summer and winter. It also advises airing during cleaning, cooking or DIY activities.
When rooms are busy, vulnerable people are present or viruses are circulating widely, Ameli recommends renewing air several times during the day. Opening opposite windows helps create a draught; a window left slightly open exchanges air more slowly.
Ventilation inlets and outlets need maintenance. Check that air can circulate and report a faulty system rather than assuming that occasional window opening solves every housing problem.
Products also matter. Sprays, air fresheners, scented candles and cleaning products can add substances to indoor air. Follow their instructions; a pleasant smell does not show that the air is healthier.
These are environmental precautions, not a treatment for a cough or breathing difficulty. If symptoms persist, explain when and in which rooms they occur without deciding yourself that indoor air is the cause.
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