...after being freed from its vacuum packaging and placed on the bed?
I realise there's plenty of info about this online, but it's so conflicting! - seems to vary from an hour or 2 to 48 hours(!) - so I thought I'd ask for people's experiences with this. I'm quite impatient to sleep on it, but I realise smell can be a factor (the free pillow that came with it honks pretty badly atm, only just unwrapped it tho) and I'm also unsure whether sleeping on it before it's fully expanded is damaging to the mattress in any way? (that sounds silly, but I'm clueless re this stuff.) Thanks in advance for any advice people can offer!