If you accidentally inhale paraquat odor, it usually does not cause poisoning, but if you inhale paraquat gas for a long time, it may lead to poisoning, and you need to seek medical treatment in time for gastric lavage, dialysis and other treatments. Paraquat is a highly toxic pesticide with strong lipophilicity, which can be rapidly absorbed by the human digestive and respiratory tracts. When ingested in 5ml, it can cause serious symptoms, such as oral cavity, esophageal mucous membrane erosion ulcers, liver failure, kidney damage, pulmonary fibrosis, etc.. However, the volatility of paraquat is very weak and will not be easily volatilized and inhaled. The usual smell of paraquat is usually added to the odorant, which will irritate the nasal mucosa, but generally not toxic. If you just accidentally inhale the odor of paraquat, it will not reach the dose of toxicity, and you will not have obvious discomfort, so you usually do not need special treatment. However, if you inhale paraquat gas for a long period of time, it may cause a toxic reaction with a burning sensation in the respiratory or digestive tract, and you should seek medical attention promptly. There is no specific treatment for paraquat poisoning, which is usually symptomatic to stop the absorption of the toxin. The unabsorbed paraquat can be discharged through gastric lavage and vomiting; the excretion of paraquat can be promoted through replenishment of body fluids; paraquat can be removed from the bloodstream through hemodialysis, and methylprednisolone, cyclophosphamide, glutathione and other medications can also be taken under the guidance of a doctor for treatment. If patients experience significant discomfort after inhaling paraquat odor, it is recommended that they seek medical attention in a timely manner and intervene as early as possible under the guidance of a medical professional to avoid delaying their condition.