Welder Red Seal · Question
A welder is working on a construction site using a SMAW process. They notice a strong, sweet-smelling odour and irritation in their throat and eyes, even though general ventilation is in place. Based on these symptoms, which of the following atmospheric contaminants is most likely present?
A sweet-smelling odour and irritation of the throat and eyes are common symptoms associated with exposure to ozone, which is created by the ultraviolet radiatio
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Question: A welder is working on a construction site using a SMAW process. They notice a strong, sweet-smelling odour and irritation in their throat and eyes, even though general ventilation is in place. Based on these symptoms, which of the following atmospheric contaminants is most likely present?
Answer options: ✅ Ozone
- Carbon monoxide
- Nitrogen oxides
- Fluorides
Correct answer: Ozone
Explanation: A sweet-smelling odour and irritation of the throat and eyes are common symptoms associated with exposure to ozone, which is created by the ultraviolet radiation from arc welding interacting with oxygen in the air. Carbon monoxide is odourless, nitrogen oxides have a sharp, irritating odour, and fluorides typically cause respiratory irritation but not a sweet smell.
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Question explanations
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