In Singapore, air pollution can manifest as haze, an atmospheric phenomenon which causes dust, smoke and other dry particulates to impair the clarity of the sky. These aerosols usually arise from complex chemical reactions of sulphur dioxide gases (emitted during combustion) converting into small droplets of sulphuric acid. In Southeast Asia, the haze is particularly debilitating during the Southwest monsoon season from July and October, due to strong winds that funnel forest fire smoke from nearby regions1
So What’s the Link Between Air Pollution and Allergies? 2
If you’ve been suffering from constant sneezing, coughing, wheezing, runny nose, or itchy red eyes, pollution may be to blame, especially if weather conditions indicate high concentrations of haze.
These symptoms, otherwise known as an allergic reaction, happen when airborne particles enter through the nose and mouth. Though these particles don’t cause harm or carry disease, the body sees them as foreign intruders. To get rid of these particles, the body’s releases a chemical called , which, in turn, is what triggers allergic response.2
Particles that trigger allergies are called allergens. There are countless airborne particles that can be allergens, including the substances that form haze.