Hi JonD, Welcome to Mrs. Clean!
Not everyone enjoys that new leather smell, and speaking from experience, pregnancy hormones can cause our sense of smell to become heightened, making even seeming innocuous items smell terrible!
The leather odor comes from the tanning process, when the leather is finished, it?s also possible that the natural musk contained within in the hide (kind of smells like skunk), is part of the problem, or glues and solvents used during the manufacturing process.
I?m assuming the problem is with the new leather itself, and the first thing I would try is washing the leather with a good saddle soap, it?s inexpensive and is made just for cleaning leather. Follow up with a leather conditioning product made of linseed or lanolin oil to keep the leather soft.
You can also try using some odor absorbers to remove the smell. There are several natural products available using a mineral called Zeolite.
Zeolite is a natural mineral that adsorbs moisture, fumes, chemicals and odors. It comes from volcanic ash, and is all natural, works for years and the granules can be placed back out in the sun (for 6 hours) to be recharged!
Look for the product that comes in mesh pouches that you can slip under and in the couch; this mineral is really amazing odor remover and works very well!
Products made with Zeolite can be found in the pet section of your grocery store, pet stores and home improvement stores in the odor remover section. (you can also search the web for zeolite odor remover)
For intense treatment to remove odors using this product, place some towels sprinkled with the zeolite minerals on and under the couch, and then cover the couch with a large cotton sheet. The odor will be gone the next day.
I hope this helps you. And congrats on the baby!