tasteless antibiotic? Change of plans...

[Emeraldgreen]

Does anyone know of an antibiotic equivelant to Clavamox that is tasteless? My cat Tiger is already making snuffly noises and choking as he did 5 months after the first tumor was removed from his nasal passage but this time, it's only been a month and a bit since the tumor was removed.
My vet told me that when they removed the tumor this last time, there was some pus and an infection which they cleaned up. I emailed him (he is quite far away) and asked if the infection could be back and if so, could I try and treat it with some Clavamox tabs (62.5mg) that I had on hand. He thought that it could be the infection and that Clavamox would be a reasonable treatment for it. I told him I only had 5 days worth if I give it twice a day and he told me to let him know if there was improvement and he would call in a prescription for more at a pharmacy near me.
The problem is that they are bitter and I have pilled the first two but it was a struggle and he is already having difficulty with his airways and it is so stressful for both of us to try and force them. I bought pill pockets and he isn't interested in the slightest. I crushed it up in the gravy of some wet cat food and he wouldn't eat it. Today I crushed it up in more gravy and then drew it into a syringe and tried to give it to him that way. He fought it and it was so upsetting to see him looking at me with such a pleading expression as if to say 'why are you doing this?!?'. He was coughing and miserable afterward and so tired. He basically hates me now and I feel so terrible about it. I don't want the last chapter of his life to be like this.
Does anyone know of an antibiotic that is tasteless? If it wasn't flavored or bitter, I could mix it into his food because he still has an excellent appetite. I'm going to contact my vet on Monday when he is in next but I thought maybe someone here might know of an antibiotic that isn't so bitter and in the same 'family' as Clavamox.
If there isn't one, I'll see if the compounding pharmacy can mix the Clavamox into a suspension and try and hide the taste.