I sort of read the thread fast, but it sounds like the water company decided to flush lines or what ever they call it. They’ll up the chlorine during those times and the smell is usually obvious. The bubbles are the chlorine gassing off of the water. Sometimes there are more bubbles but it’s just the chlorine. I use a couple of 5 gallon buckets in the summer to fill with water and let it gas off for 24 hours. Sometimes it takes a little longer. I beat the sides of the bucket to free the bubbles to rise and gas off.
The problem with chlorine in the water is that it will kill off or dull out the microbiology in the soil. So, if you use Myco and organics, that system requires chlorine free water so they microbes can make the nutes available to the roots.
You could even call the water department and ask if they flushed or cleaned the lines recently. Sometimes they’ll publish it in the paper as a PSA. peace