What gas can welding produce that needs ventilation control?

Ozone.

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  1. Helium only
  2. Ozone ✔
  3. Oxygen only

Why: Welding can expose people to gases such as carbon monoxide, carbon dioxide, and ozone.

Huh, didn't know that: Welding can expose people to gases such as carbon monoxide, carbon dioxide, and ozone.

The dad joke
Ozone is no zone for lungs!
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References

Answer: Ozone. Welding can expose people to gases such as carbon monoxide, carbon dioxide, and ozone.

  1. Welding en.wikipedia.org/wiki/Welding
    potentially harmful particulate matter and gases, such as carbon monoxide, carbon dioxide, and ozone
    Checked 2026-11-07.

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