Bro, I completely agree with Anna Andreeva, she wrote everything clearly and to the point, without touching your feelings, but sometimes you need to touch them in order to get out of your comfort zone and look at everything with a fresh look. So, give yourself a slap in the face and remember who you are. At the age of 27, it would be time for the peasant to break away from the parental nest and go on a free voyage, primarily psychologically. You will not change the value system of the other person (parents), but you can make yourself much happier. Read relevant books, watch films, talk to people who energize you and go to a psychologist, because childhood traumas need to be healed, and the sooner the better. And in general, I hope that the author is not a troll, otherwise I do not want to waste energy if on the other side of the screen there is a disgustingly giggling schoolboy, and not a person who needs support. Good luck!
Probably, the time has come for a 27-year-old man to grow up. You are not their parent, so you don't need to babysit them. I understand that this can be difficult to accept, but it will have to be: two adults themselves made the choice to be alcoholics. They know that drinking is harmful, they know that alcoholism is a disease, they know where to turn if they want to be cured. If you don’t know, yourself will ask you.
People who live with addicts and try to rescue them constantly are called codependents . For them, there are also methods of therapy, groups, programs. Therefore, you do not need to work with your parents, but with yourself. Leave them alone, they have the right to live as they want. And you can take on your own life and stop being addicted to their addiction. It is unlikely that this will work on your own, it is advisable to contact a specialist.
It seems to me that you need to seriously talk to them. And let them know that your intentions are absolutely serious. Tell your parents that you are worried that alcoholism affects not only their health, but also yours in the form of panic attacks and eternal worries.
If they really love you, and more than alcohol, then they will at least try to quit drinking.
If they refuse you, you should not assume that this is the end of life. Just understand that everyone has their own life, and he does whatever he wants in it. It so happened that whether you want it or not is the choice of your parents. Stupid, irresponsible, but a choice.
Alternatively, if they agree to take action, you can help them in this. For example, take to a good doctor. Give them a hobby or job.
What needs to be done except how to wash your hands and disinfect everything, heard someone take sorbents or even gargle with them