Does your chewing gum lose its flavour

By the pond near the back door we have a large mock orange blossom shrub. I've no idea what variety it is - certainly different to any other I've seen anywhere. It has a hugely powerful scent, which also is unlike other mock oranges (or 'Philadelphus' if we're being posh). This one smells exactly like Juicy Fruit chewing gum. It's a mass of blossom at the moment, reminding me of a frothy lacy wedding dress,
and the delicious scent blows in through the open windows and door. It's growing right on the boundary so next door get to enjoy it too, which is only fair as they've planted a large climbing rose at the front boundary fence which fills the rooms at the front of our houses with scent. In this hot weather it's just wonderful.