I also have this happen regularly. I recently gave up smoking cigarettes so much less so now than before, but it was always much clearer/white when I had smoked DMT recently. But mine were like the consistency and size of the lumps coughed up from cigarettes as well.
DMT usually makes a ball of saliva form at the top of my throat as well, usually making me need to spit afterwards. This spit doesn't usually have the same lump/ball form to it as these lung (not sure) things.
The inner soul is full of joy. Reveal my secrets and sew me whole. With each day, "I" heeds your call.
You may not care the slightest and may not be the brightest, but from here "I" sees you're mighty for you created it all.
And the jumbling sea rose above the wall.
Through this chaos comes the order you enthrall.