HAZE is a common phenomenon that occurs during dry spells when smoke particles and dust from forest fires - whether intentionally started to clear land or due to a dry spell - float and migrate across national boundaries.
http://thestar.com.my/health/story.asp?file=/2013/6/30/health/13291884&sec=health
http://thestar.com.my/health/story.asp?file=/2013/6/30/health/13291884&sec=health
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