Here is a site called www.doggedhealth.com that is a health and wellness site for dogs. This is the article about nose discharge.  You should take your pup to the vet.

www.doggedhealth.com

Here is an article on diarrhea which suggests ways to make the stool firmer and when you need to go to the vet for loose stools:

www.doggedhealth.com

"Diarrhea – loose, unformed stool –can be caused by no more than a minor gastrointestinal upset or be a symptom of a more serious problem requiring immediate care. Two of the most common causes of diarrhea in dogs are intestinal parasites such as giardiasis and roundworm and … Read more

I would not use alcohol. Your vet can tell you what can safely be used that will not harm your dog. You will likely also have use a product that gets rid of fleas in your house too.