“Pour a pitcher of water down every drain you can find, especially the ones you never use.”
That trick works for dry traps, but you’re right—old, cracked pipes are a whole different headache. I’ve seen plenty of “phantom” smells that turned out to be tiny leaks behind finished walls. Sometimes it’s not even a big break, just enough for sewer gas to sneak out. 70s plumbing isn’t the worst, but age definitely ups the odds. Ever notice the smell gets worse after heavy rain? That’s a classic sign the pipes aren’t sealed up tight anymore.
Had a job last winter where the homeowner swore up and down it was just a dry trap causing the stink. Poured water down every drain, even the floor ones, but that rotten egg smell kept creeping back. Turned out, there was a hairline crack in the cast iron stack behind the laundry wall—just enough for gas to seep through, especially after a big rain. People underestimate how sneaky those old pipes can be... sometimes it’s not what you’d expect at all.
Funny timing—just went through something similar last month. I kept thinking it had to be a dried-up floor drain, but after dumping water everywhere, the smell still lingered. Ended up finding a tiny gap where the main sewer line meets the foundation... not even a crack, just a little separation. Is it common for those old joints to shift like that over time? Makes me wonder how much else is hiding behind the walls.
- Been there, smelled that. I swear, old houses have a sixth sense for timing their weirdest issues right after you think you’ve fixed everything.
- Those joints definitely shift over the years—settling, freeze-thaw cycles, maybe even just the house sighing from all the eco-friendly upgrades I keep trying to make. Sometimes I wonder if my compost bin in the basement is making things worse, but nope, it’s always the pipes.
- Found a similar gap once and tried sealing it with some “green” caulk. Worked for about a week… then the smell came back with a vengeance. Ended up having to call in a pro who found another tiny crack behind some insulation. Like, how many secret passageways does wastewater need?
- Ever notice if the smell gets stronger after heavy rain? I read somewhere that old clay pipes can let groundwater (and smells) sneak in if they’re not sealed tight. Makes me paranoid about what’s lurking under my laundry room floor.
- Anyone ever try those enzyme-based cleaners for sewer smells? I’m skeptical but curious if they actually work or just make everything smell like citrusy disappointment.
- Yep, rain always seems to make the smell worse for me too—guess those old pipes just can’t keep a seal.
- Tried enzyme cleaners once. They helped a bit, but honestly, the smell just came back after a few days. Citrus disappointment is right.
- I’ve found running water through every drain (even the ones you barely use) helps a little. Sometimes it’s just dry traps letting sewer gas sneak in.
- Never thought about the compost bin being a culprit, but I get paranoid about every new “green” thing I try. Still, it’s always the pipes in the end…
