A guy on ICmag was saying to use ozone and an elevated exhaust
If you run an Ozone generator downstream from your greenhouse, with it's own mixing room/baffle box you should have no problems.
If you stick in too much O3, it will smell of O3 around the area
If you stick it in the greenhouse you may zap most of the flower's smell in the last few weeks, BUT, O3 works very well sterilizing air, killing mould spores, so may also be a handy tool against any mould outbreaks.
Re smells in general, look at they guys hunting Deer sitting up in high seats, only 3 or 4m up and very reclusive wild animals [usualy] cannot smell them up there, so, if you stick your exhaust/exit up high, nobody should be smelling any O3, or weed.
If you power your O3 generator via a computer UPS, emergency battery backup, if there is a powercut, the neighbourhood does not get stunk out by all your suddenly un oxidised flowed scents, the machine carries on zapping it on battery power.