Just don't !!
There are lots of popular myths circulating on the internet, and "support groups" are an area in which they abound.
One of the most frequent pieces of supportive advice is to "annoint furniture legs, door frames, etc, with scented oils.....so your blind dog knows where they are".
Whilst kindly, and well intentioned, this misinformation is all about what humans THINK dogs need (because it would be helpful to humans!), but reveals a complete lack of understanding about how dogs actually function.
In the canine world, scent is the primary sense. On a piece of grass which to us is odour free, a dog can smell a hundred messages.
In the home, each piece of furniture or square metre of carpet has its own distinctive odour. A dog can tell when a chair was last dusted by its owner, and who last brushed up against the sofa. The canine olfactory world is filled with literally thousands of individually identifiable scentable pieces of information.
Put simply, they know how every inch of their home should smell.
Then, just at the point when they have lost sight .... and are trying to make sense of their newly dark world ... their loving owner follows the supportive advice discovered online, and annoints the house with a series of pungent new smells.
It is no wonder the dog becomes confused!
It already knew exactly how every chair leg smelled, and now has to re-navigate through a haze of new scents.
The owner undoubtedly feels reassured that they are being pro-active, following good advice, and "helping"...... the dog did not, and does not, need it.
Not only are owners wasting their money, but they are actually making the dogs life more difficult.
So please, if this misinformation is passed to you, as the owner of a newly blind dog..... do your dog a favour, and just ignore it!
And if you want to educate or advise others, point them in the direction of this highly informative TED talk, on how scent works in a doģs world