I work from home in a little one bed flat and I have 3 indoor cats - NIGHTMARE! I love my little fur-babies but they are certainly the most efficient turd factories I've ever come across and not everyone is around animals so I had a bit of a problem. Indoor cats means no open windows.
I didn't know this but there is actually a way to lock your windows in an open position so they cant be moved. Open your windows about an inch and then lock it how you would when you close it. Magic bit of information for me, I keep mine permanently open now, I can get fresh air without worrying about someone getting in or cats getting out when I leave.
I always febreeze before every client but something else I've stumbled across is incense burners. You can get such cute ones, there is no open flame, and the smells FILL the house. And the different scents you can get are incredible. I just bought a new fancy waterfall one for £15, they are on amazon and usually come with free incense cones. If anyone wants a link feel free to DM me, but they are super easy to find. I'm a vanilla girl so always go for vanilla but you can get so many!
Failing this, if I've forgotten completely about anything smell related. Take 2 caps (not cups) of vanilla extract and put it in your oven for 20 mins on a high heat. As a last minute resort your house will smell like cookies
Maybe it's not a sexy smell per se ... but works in a pinch