Harm of fireworks and firecrackers
If a large number of firecrackers are set off in windless or low-pressure weather, harmful gases will not disperse for a while, which will strongly stimulate people's respiratory tract, make people cough and cause respiratory diseases such as tracheitis. The noise generated by firecrackers will have a great impact on our physiology and psychology, which will not only damage our hearing, but also damage people's cardiovascular system.
The loud noise from setting off fireworks makes it difficult for the elderly to sleep. The patient is frightened, and the students can't study and rest quietly. Many times, pedestrians are frightened by the sudden loud noise when setting off fireworks, which is likely to lead to very serious consequences for heart patients.