Clean your microwave: Put a microwave safe bowl in the microwave, fill it with water, add a dash of vinegar & put it on for 5 minutes. The steam will soften up all the gunk & absorb the smells. Let it sit to let the steam penetrate.
When your iron’s soleplate looks gunky due to mineral buildup, you can easily clean it with a damp cloth and toothpaste. Make sure the iron is cool and unplugged and wipe the toothpaste cloth first, then wipe it with a second cloth.
I have never been able to remove grease stains! Use chalk to remove grease stains from clothes. Simply rub white chalk on the affected area and wash as normal - the chalk will absorb the grease and be washed away in the cycle.