Hi Kap, welcome!
There are differences in F1B and Multigen dogs and although F1Bs are consistently good coats for allergic people, not all F1Bs are...as you and your husband know, allergens come from many things, it can be from the hair of a dog, or from the dander or saliva...it can come from outside influences, such as the type of shampoo or even the collar type used...and it can even be a problem of the dog playing with and around other animals.
So, your husband is right to be sceptical... and there is no evidence, unless you count the thousands of people who tell you that they have allergies and that their allergies are not aggravated by Labradoodles.
Still, a Labradoodle coat can only be good for allergic people when they are allergic to the fur of dogs...and the doods that get the hair from their Lab side, may cause a reaction...but if the dog has a Poodle coat, and if the person is allergic to the fur (I understand that Poodles have hair, but I don't know if that is a fact) then the Labradoodle could be the answer.
My husband is severely allergic to most cats and dogs (and other animals for that matter)...so much so that he literally can't breathe after being with them for 15 minutes. (He is on medication and uses inhalers.) But he has never had an allergic reaction to our Labradoodles. (And our Labradoodles are F1s...and they do shed a bit.)
We now have 2 F1 Labradoodles, one Poodle, one F1 Goldendoodle and 10 F1B puppies in our home...and no allergies. Sooooo, I would say that for us, this is sufficient proof that the dogs don't cause an allergic reaction for my husband's particular type of allergies.
There are differences in F1B and Multigen dogs and although F1Bs are consistently good coats for allergic people, not all F1Bs are...as you and your husband know, allergens come from many things, it can be from the hair of a dog, or from the dander or saliva...it can come from outside influences, such as the type of shampoo or even the collar type used...and it can even be a problem of the dog playing with and around other animals.
So, your husband is right to be sceptical... and there is no evidence, unless you count the thousands of people who tell you that they have allergies and that their allergies are not aggravated by Labradoodles.
Still, a Labradoodle coat can only be good for allergic people when they are allergic to the fur of dogs...and the doods that get the hair from their Lab side, may cause a reaction...but if the dog has a Poodle coat, and if the person is allergic to the fur (I understand that Poodles have hair, but I don't know if that is a fact) then the Labradoodle could be the answer.
My husband is severely allergic to most cats and dogs (and other animals for that matter)...so much so that he literally can't breathe after being with them for 15 minutes. (He is on medication and uses inhalers.) But he has never had an allergic reaction to our Labradoodles. (And our Labradoodles are F1s...and they do shed a bit.)
We now have 2 F1 Labradoodles, one Poodle, one F1 Goldendoodle and 10 F1B puppies in our home...and no allergies. Sooooo, I would say that for us, this is sufficient proof that the dogs don't cause an allergic reaction for my husband's particular type of allergies.