Caring for Mounted Plants?

[RandomGemini]

I have a mounted Bulbophyllum. I'm really new to mounted plants, so I'm not sure how the process of upgrading and caring for a mounted orchid works other than it being difficult to overwater a mounted plant, which is fine by me!

I noticed when I was watering it today that it has a smell to it. The plant is growing fine, it's putting out the first new leaf I've seen since about a month after I bought it, I'm hoping for a spike because I'm really curious about the smell on this guy. It's supposed to stink like the dickens and I've heard rumors that my family may move out while it's in bloom.

But that smell on the mount seems like decay to me, so I'm concerned. The smell is earthy, kind of like opening a bag of potting soil. Is it time for a new mount also or can I just replace the pad of moss around the roots, or is this normal and something I just never noticed before?

It's been on this mount for about a year as far as I can tell. I've had the plant since October.

Thanks for any tips or advice!