Expat volunteers couldn't just watch Bangkokians being at risk due to unhealthy air caused by PM2.5 microdust particles. Bangkok Community Help Foundation members handed out masks on Jan 24. (Photo ht Friso Poldervaart.)#Thailand #PM25 #ฝุ่นกรุงเทพ
#Thailand #PM25 #ฝุ่นกรุงเทพ