Got some pk 9/18 in ignition bottle, is it ok?

Hi, im using plant magic nutrients, platinum pk 9/18, ignition etc, in my 8th week of flowering. The other day some pk went into the ignition bottle by accident, only a tiny bit, but as such, now every time I open the ignition bottle, it stinks of rotten eggs because of the high sulphur in the pk. Doesnt seem to impact the plants or ph, but will it be ok, or will it get worse in the bottle if I leave it?
Also with pk 9/18, some guides say to stop using end week 7, some end week 8, im flushing next week at week 9, is it advisable to continue using it this week still? Thanks