Recent research also doubt that those are one of the carcinogenic substances . furthermore , the granular pollutants are also the main source in atmosphere suspensible particles . they cause damages to environments , landscapes , and buildings , and the pungent smell produced by them also makes people feel uncomfortable 最近的研究亦怀疑其乃致癌物质之一，此外粒状污染亦是大气中悬浮微粒之主要来源，对环境、景观、建筑物造成破坏，其刺鼻的气味也令人呼吸不舒服。
