It is a native azalea. Is it fragrant? Probably it is the Piedmont azalea, Rhododendron canescens. Very nice plant and worth keeping. It is really considered a shrub.

Yes, it does. Probably Euonymus kiautschovicus, maybe 'Manhattan.' They're very hardy, have nice glossy foliage, but they don't have showy flowers, so are not usually grown as a "specimen" but more likely as a hedge or screening plant. They're fast growing and easy to propagate from cuttings, and they can take lots of shade. I use them as a screen between & below a line of blue spruce.

based on the nice hack tree next to it [love that bark] ..... i know whose butt the seed shot out of .. lol ... and i would bet on the seedy wild bramble varieties ... blackberry or rasp ... if you want some nice black or raspberries.... buy some good varieties .. and plant then in sun ... the ones the birds drop are usually very small berries.. with huge seeds ... both in size and amount ... all that said.. looking at the area in general ... if all your looking at is a natural area ... leave it there ... just dont bother moving it to prime space ... not many 'free' plants.. end up valuable ... ken

There you go with that amazing eyesight again, floral!! I looked but did not see the purple blotches (typically very pronounced) and the fact that hemlock is not normally found in a cultivated garden (while anthriscus is) lead me to that ID. Since both are WA state noxious weeds, either/both need to come out :-) And it's only poisonous if you eat it :-) But I'd certainly make sure I washed well before dinner!