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Air conditioning also contributes mold into the air. People with mold allergies will be greatly affected by air conditioning. If you are prone to bronchitis you have probably taken a lot of anti-biotics that have depleted your good bacteria that supports your immune system. Taking some probiotics (acidopholis or bifodopholis) would repopulate your good bacteria providing you defense against future bronchial problems. Avoiding dairy & wheat may also help.
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