Ok, So I have COPD and asthma which I caused myself through over 45 years of heavy smoking, 3 years ago I had to give up smoking quickly in order to have surgery for lung cancer, I used the Juul and it worked but was terribly expensive to continue so started mixing my own e liquids around a year ago to save money, since then , my asthma and copd has become so much worse, worse than when I was smoking by 100%, I wheeze and cough and have breathlessness, my specialist said it could be a result of the surgery, but I was fine after the surgery on the Juul, everything changed went I went DIY, coincidence maybe? I mix at VG 70/30 and use20mg of hybrid nicotine and La Tabbacceria flavourings. Is there anyone else with COPD or Asthma that has found that vaping really excacerbates it and is there any way around it other than give it up or return to the Juul ? thank you in advance