How Carbon Monoxide Poisoning Happens
Last verified: September 2026
Carbon monoxide gives you no natural warning — no color, no smell, no taste — so knowing the signs yourself is what buys you time to act. Here's the full symptom picture and exactly what to do. Rather talk it through? My number is (330) 200-8042.
Carbon Monoxide Poisoning — The Signs and What to Do
Carbon monoxide from a running generator is invisible and odorless, so the only early warning you get is what your body feels. The signs — headache, dizziness, weakness, nausea, confusion, and a sudden heavy sleepiness — mimic the flu, and more than one person feeling them at once is a red flag. If you suspect it, get everyone and every pet to fresh air first, then call 911 from outside. There's a printable page-by-page version up top.
Common Questions
1 Why can't I smell carbon monoxide?
It has no color, smell, or taste at all — unlike natural gas, which is given a rotten-egg odor on purpose. That's why your only early warnings are the symptoms your body feels and a working CO alarm on the wall.
2 What are the warning signs of carbon monoxide poisoning?
Headache — often first — along with dizziness, weakness, nausea, shortness of breath, confusion, and a sudden heavy sleepiness. They come on together and are easy to mistake for the flu or plain tiredness.
3 How can I tell it apart from the flu?
Carbon monoxide usually brings no fever, tends to make several people — and pets — sick at once rather than one at a time, and eases when you go outside. Symptoms that line up with a running engine are a warning, not a coincidence.
4 What should I do if I suspect carbon monoxide?
Get everyone and every pet outside into fresh air first — don't stop to open windows or find the cause. Then call 911 from outside, don't go back in until responders say it's safe, and get a medical check even if you feel better.
5 Why is more than one person feeling sick at once a red flag?
Carbon monoxide affects everyone breathing the same air at the same time, while a cold or flu usually moves through a household one person at a time. Several people — or pets — feeling the same vague symptoms together points to CO.
6 Do I still need a doctor if the symptoms pass?
Yes. Symptoms often ease in fresh air even when the exposure did real harm, and some effects can show up later. Let the 911 responders check everyone and follow their advice about the emergency room.
Would You Rather I Just Help?
Talking through the symptoms, checking your alarms, and making sure everyone in the house knows the plan — fresh air first, then 911 — is exactly the kind of visit I take most seriously. $99 flat, 30-day come-back-free.
Would you rather I just do this for you?
No shame in it — plenty of folks would rather hand it off, and that's what I'm here for. I'll come to your home, set it up right, and make sure it's working before I leave. Flat $99 per visit — no jargon, no upsell, and every visit is 30-day come-back-free.
Not a hardware job? I can often fix it remotely for $49 — a secure screen-share, up to 2 hours, that you watch the whole time and can end whenever (included free for $39/mo Support Plan members, and it counts toward the $99 if it turns out I need to come out).