Unfortunately, tillage/daikon radishes tend to smell like natural gas during decomposition.
This would not normally be a problem but about 3 years ago a gas well and compressor station were installed about a half mile away.
When the radishes started decomposing, the gas guys were going nuts trying to find a non-existent leak!
So I've transitioned to turnips and rutabagas to minimize headaches for all involved!
Wow, that is a good reason not to use them! I have heard that about them before.
I have used daikon before and they work quite well.
Turnips and rutabagas accomplish the same goal, but it takes 2 to 3 years to do what daikon do in 1