Depending on the article and the quantity of alarmism the author wanted to inject, the headline either said, "Kitchen sponges have lots of bacteria" or "You're smearing bubonic plague on your toddler's highchair tray."
You're pretty sure you're not doing that, but you check your pantry anyway to see if any packages say "This product was processed in a facility that handles milk, nuts and rats." No? You're good.
The news that sponges had microscopic gunk isn't — what's the word I'm looking for? — news. You know that when you wipe the cutting board after slicing raw chicken, the germs don't go away just because you squeezed the sponge. "I'll just strangle the little buggers. That'll do it."
No. You use antibacterial soap — which we all suspect is absolutely useless — and you run the sponge through the dishwasher before putting it in the microwave. If anything's still living after being drowned and baked, it deserves to live. Send it to Mars, and in 25 years it will have evolved into something that stands erect and greets us when humans finally land.
I'm not worried about my sponges. I'm worried about my fridge, which smells.
Let's back up a second. In the old days, you would take out everything and discover the source of the olfactory offender. Elderly fish. Cheese with a pelt. Milk that made you think "maybe that's where they get stucco." You washed the fridge, and that was that.
Now you sit down and google that problem, even if it means fridge-freshener ads will follow you around the internet for a fortnight. Autocomplete reassures you that you are not alone. Type in "Why does my fridge smell?" and you get:
Why does my fridge smell funny?