傳播花粉在大自然生態系統中是非常重要的，而而且大多數傳粉工作都依靠昆蟲。有研究發現，臭氧濃度高會令煙草天蛾無法靠嗅覺找到合適的花朵採蜜，但煙草天蛾屬較特別的昆蟲，因牠同時能靠視覺及學習而最終成功採蜜。研究員擔心大多昆蟲只靠嗅覺，會因空氣污染而影響生態平衡。

Pollination is a very important part in the ecosystem, and most of that rely on insects. Study found high ozone air pollution will affect communication between flowers and pollinators. For example, tobacco hawkmoth lost attraction to the scent of their preferred flowers, but this moth has an advantage as they can also use their vision and ability to learn to get to their flowers.Researchers worry about other insects that rely only on scents would be greatly affected and the ecosystem would be damaged.

https://www.technologynetworks.com/applied-sciences/news/flower-scent-unattractive-to-pollinators-in-polluted-air-339435